import axios from 'axios'
import {
  ElNotification,
  ElMessageBox,
  ElMessage,
  ElLoading,
} from 'element-plus'
import {
  getToken,
  getRefreshToken,
  setToken,
  setRefreshToken,
  setExpiresIn,
  getExpiresIn,
} from '@/utils/auth'
// import useTagsViewStore from '@/store/modules/tagsView'
import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from '@/utils/tableInit'
import cache from '@/plugins/cache'
import { saveAs } from 'file-saver'
import useUserStore from '@/store/modules/user'
import router from '@/router/index'
import { refreshToken } from '@/api/login'
let downloadLoadingInstance
let loadingInstance = null
let loadingTime = null
let isLastRequest = false
let refreshTime = 1000 * 60 * 5
// 是否显示重新登录
export let isRelogin = { show: false }

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_APP_BASE_API,
  // 超时
  timeout: 10000,
})

// request拦截器
service.interceptors.request.use(
  (config) => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
      config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params)
      url = url.slice(0, -1)
      config.params = {}
      config.url = url
    }
    if (
      !isRepeatSubmit &&
      (config.method === 'post' || config.method === 'put')
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === 'object'
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime(),
      }
      const requestSize = Object.keys(JSON.stringify(requestObj)).length // 请求数据大小
      const limitSize = 5 * 1024 * 1024 // 限制存放数据5M
      if (requestSize >= limitSize) {
        console.warn(
          `[${config.url}]: ` +
            '请求数据大小超出允许的5M限制，无法进行防重复提交验证。',
        )
        return config
      }
      const sessionObj = cache.session.getJSON('sessionObj')
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ''
      ) {
        cache.session.setJSON('sessionObj', requestObj)
      } else {
        const s_url = sessionObj.url // 请求地址
        const s_data = sessionObj.data // 请求数据
        const s_time = sessionObj.time // 请求时间
        const interval = 1000 // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = '数据正在处理，请勿重复提交'
          console.warn(`[${s_url}]: ` + message)
          return Promise.reject(new Error(message))
        } else {
          cache.session.setJSON('sessionObj', requestObj)
        }
      }
    }
    if (!loadingInstance) {
      loadingInstance = ElLoading.service({
        text: '加载中...',
        background: 'rgba(0, 0, 0, 0.7)',
      })
    }
    isLastRequest = true
    return config
  },
  (error) => {
    Promise.reject(error)
  },
)

// 响应拦截器
service.interceptors.response.use(
  (res) => {
    // 未设置状态码则默认成功状态
    let code = res.data.code || 200
    // 获取错误信息
    const msg = errorCode[code] || res.data.msg || errorCode['default']
    // 二进制数据则直接返回
    isLastRequest = false
    if (loadingTime) {
      clearTimeout(loadingTime)
    }
    loadingTime = setTimeout(() => {
      if (loadingInstance && !isLastRequest) {
        loadingInstance.close()
        loadingInstance = null
      }
    }, 300)

    if (
      res.request.responseType === 'blob' ||
      res.request.responseType === 'arraybuffer'
    ) {
      return res.data
    }
    // 刷新token
    refreshFun()
    if (code === 401) {
      loginOutTip()
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
    } else if (code === 500) {
      ElMessage({
        message: msg ? msg : '业务系统繁忙，请稍后再试！',
        type: 'error',
      })
      return Promise.reject(new Error(msg))
    } else if (code === 601) {
      ElMessage({ message: msg, type: 'warning' })
      return Promise.reject(new Error(msg))
    } else if (code !== 200 && code != 20000) {
      ElNotification.error({ title: msg })
      return Promise.reject('error')
    } else {
      return Promise.resolve(res.data)
    }
  },
  (error) => {
    if (loadingInstance) {
      loadingInstance.close()
      loadingInstance = null
    }
    let { message } = error
    if (message == 'Network Error') {
      message = '后端接口连接异常'
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时'
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常'
    }
    ElMessage({ message: message, type: 'error', duration: 5 * 1000 })
    return Promise.reject(error)
  },
)

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({
    text: '正在下载数据，请稍候',
    background: 'rgba(0, 0, 0, 0.7)',
  })
  return service
    .post(url, params, {
      transformRequest: [
        (params) => {
          return tansParams(params)
        },
      ],
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      responseType: 'blob',
      ...config,
    })
    .then(async (data) => {
      const isBlob = blobValidate(data)
      if (isBlob) {
        const blob = new Blob([data])
        saveAs(blob, filename)
      } else {
        const resText = await data.text()
        const rspObj = JSON.parse(resText)
        const errMsg =
          errorCode[rspObj.code] || rspObj.msg || errorCode['default']
        ElMessage.error(errMsg)
      }
      downloadLoadingInstance.close()
    })
    .catch((r) => {
      console.error(r)
      ElMessage.error('下载文件出现错误，请联系管理员！')
      downloadLoadingInstance.close()
    })
}
function loginOutTip() {
  if (!isRelogin.show) {
    isRelogin.show = true
    ElMessageBox.confirm(
      '登录状态已过期，您可以继续留在该页面，或者重新登录',
      '系统提示',
      {
        confirmButtonText: '重新登录',
        cancelButtonText: '取消',
        type: 'warning',
      },
    )
      .then(() => {
        isRelogin.show = false
        useUserStore()
          .logOut()
          .then(() => {
            useUserStore()
              .getAuthCenterUri()
              .then((res) => {
                let { data } = res
                location.href = data
              })
              .catch(() => {
                router.replace({ path: '/401' })
              })
          })
          .cache(() => {
            router.replace({ path: '/401' })
          })
      })
      .catch(() => {
        isRelogin.show = false
      })
  }
}
function refreshFun() {
  let time = getExpiresIn()
  if (time && time - Date.now() <= refreshTime) {
    let _refreshToken = getRefreshToken()
    refreshToken({ refreshToken: _refreshToken }).then((res) => {
      let { accessToken, refreshToken, expiresTime } = res
      setToken(accessToken)
      setRefreshToken(refreshToken)
      setExpiresIn(expiresTime)
    })
  }
}
export default service
